package com.hmall.common.interceptor;

import cn.hutool.core.util.StrUtil;
import com.hmall.common.utils.UserContext;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class UserInfoInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //进入controller前
        String userId = request.getHeader("user-info");
        if (StrUtil.isNotBlank(userId)){
            UserContext.setUser(Long.valueOf(userId));
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        //从controller出来后
        UserContext.removeUser();
    }
}
